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  1. z=->x{(9..x).map{|i|[i-6,i]}.select{|a|a.all?{|r|(2...r).all?{|m|r%m>0}}}}
  2.  
  3. p z[100]
Success #stdin #stdout 0s 4716KB
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[[5, 11], [7, 13], [11, 17], [13, 19], [17, 23], [23, 29], [31, 37], [37, 43], [41, 47], [47, 53], [53, 59], [61, 67], [67, 73], [73, 79], [83, 89]]
https://ideone.com/yaOdn
language:
Ruby (ruby 2.5.5)
created:
11 years ago
visibility:
public

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